K-Means Best K value

Question

Hi,

I read few posts on selecting the best K value for K-means. I manually ran K-Means with few different K Values and a performance operator with Davies Bouldin. These are the values, and I am not sure how to interpret it. Please help.

K-Value	Davies Bouldin
2	-0.664
3	-1.017
4	-1.039
5	-0.917
6	-0.881
7	-0.001
8	-0.831
9	-0.855
10	-0.819

1) Which is the optimal K-Value in the above, how do I find it
2) I did this manually, how can I do it using a loop parameter.

Thank you for your time.

ssk1974 · Answer

awchisholm  wrote:
The minimum - i.e. -1.039.

Thank you Andrew.

Andrew2 · Answer

The minimum - i.e. -1.039.

ssk1974 · Answer

Thank you Andrew. In the list I have for Davies Bouldin value, which one is optimal, as they all are negative values, I am not sure which would e considered as minimal.